Abird-watcher sees an unusual bird at a feeder. he takes careful notes on the bird's color, shape, and other physical features and the goes to a reference book to see if he can identify the species. what aspect of scientific thinking is most apparent in this situation?

The frequency of alleles in a population that is in hardy weinberg equilibrium? a . changes in each successive generation b. is less important than the frequency genotypes c. shows evidence of the process of natural selection d. remains the same over several generations